John Alexis Guerra Gomez
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johnguerra.bsky.social
John Alexis Guerra Gomez
@johnguerra.bsky.social
510 followers 360 following 45 posts
Associate Teaching Professor Northeastern University, KhouryVis member
Research on #dataviz #a11y
Co-creator https://btactile.com https://navio.dev https://duto.org
https://johnguerra.co
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johnguerra.bsky.social
My #IEEEVIS 2025 paper explorer is live! 🎉
👉 johnguerra.co/viz/ieeevis2... 👈

An interactive #dataviz to explore 300+ papers by similarity. Perfect for:
✨ Discovering papers related to your interests
✨ Planning which sessions to attend
✨ Creating your own paper list (new!)

Pls help me distribute it
November 2, 2025 at 1:28 PM
johnguerra.bsky.social
To help me keep track of the #chi2025 papers that I don't want to miss I made this quick prototype:

👉🏼 johnguerra.co/viz/chi2025P... 👈🏼

* Search by semantic content
* Aggregate multiple searches
* Find papers by authors, institutions, types, awards...
* Quickly check where to go from your 📲
April 26, 2025 at 3:12 AM
johnguerra.bsky.social
Here is my #chi2025 paper explorer. Visually explore papers by similarity, search for an specific topic or even find what specific sessions to attend. Please let me know what you think! #dataviz @chi.acm.org

👉🏼 johnguerra.co/viz/chi2025P... 👈🏼
April 16, 2025 at 2:22 PM
johnguerra.bsky.social
Many kudos to the vispubdata.org team for keeping the dataset up to date. As a thank you note, here is how easy it is to build the impressive @drpi.bsky.social's 2.5 @ieeevis.bsky.social ego-network of co-authorships:

🙏🏻 johnguerra.co/viz/visPubNe...

2/2
March 29, 2025 at 3:40 PM
johnguerra.bsky.social
Do you want to explore your own @ieeevis.bsky.social co-authors and citations networks? Check out my latest #dataviz
👉🏼 johnguerra.co/viz/visPubNe... 👈🏼

I'm showing the @northeasternu.bsky.social VIS Lab professors network, and the overall authors with more than 20 collaborations. Create your own!
March 29, 2025 at 3:40 PM
johnguerra.bsky.social
In minutes I'll be starting my talk Interactive Information Visualization: Unleashing the Power of Visual Data Exploration at the #RiceVCS

Please check my slides for tons of links here johnguerra.co/viz/slides/I...
Interactive Information Visualization: Unleashing the power of Visual Data Exploration Title Slide. VisLab and Northeastern Logo on the right. Photo of John Alexis Guerra Gomez with http://johnguerra.co link
March 7, 2025 at 3:06 PM
johnguerra.bsky.social
📢 Shout-out for @northeasternu.bsky.social Michelle Borking's research at the #RiceVCS 👏👏👏
Photo of a slide showing and icon chart from Ann Emery. Title not just pie charts
March 6, 2025 at 3:55 PM
johnguerra.bsky.social
Do you want to animate a @vega-vis.bsky.social vega-lite or @observablehq.com Plot chart? Here is a quick experiment that might help you that animates between two SVGs.
Let me know what you think! #dataviz.
👉🏼 observablehq.com/@john-guerra...
February 26, 2025 at 6:45 PM
johnguerra.bsky.social
How many attributes can you visualize in one chart? A little experiment on multi dimensional #dataviz that I made for a talk
👉🏼 observablehq.com/@john-guerra...
February 26, 2025 at 12:32 AM
johnguerra.bsky.social
One of my students wanted to use an online image on her page. I challenged her to recreate it with code... and couldn't resist doing my own #generativeArt experiment 😝

observablehq.com/@john-guerra...
January 26, 2025 at 3:59 PM
johnguerra.bsky.social
Good catch!, it is actually explained in the MDN documentation:

"Note: Code run in the Chrome console can access private properties outside the class. This is a DevTools-only relaxation of the JavaScript syntax restriction."

developer.mozilla.org/en-US/docs/W...
January 16, 2025 at 6:12 PM
johnguerra.bsky.social
I wonder why the previous gif wasn't animated :( here is it again my auto-fit to keep d3 network #dataviz in view all the time
Side by side comparison of auto-fit vs a regular d3 force diagram
December 6, 2024 at 8:13 PM
johnguerra.bsky.social
I love #d3js force network visualizations, but usually with larger networks nodes tend to go all over the place. Here is a simple auto-fit trick that you can use to keep all nodes in view:

👉🏼 observablehq.com/@john-guerra...
#dataviz @observablehq.com
December 3, 2024 at 8:19 PM
johnguerra.bsky.social
Heading to #Neurips2024 and feeling overwhelmed by the 4k+ papers? 🤯 Check out my paper explorer! Just enter your query and find related papers instantly using sentence embeddings and dimensionality reduction. #dataviz

👉🏼https://johnguerra.co/viz/neurips2024Papers/👈🏼
Neurips2024 paper explorer: shows a dimensionality reduction space (scatterplot) with all the papers by their sentence embeddings. It shows an animation emonstration entering different queries and then selecting in the scatterplot different areas
December 1, 2024 at 4:21 PM
johnguerra.bsky.social
My #dataviz library, smart-labels, now supports keeping labels always visible, with options for prioritizing by font size:

www.npmjs.com/package/smar...

Here's a work-in-progress network visualization of collaborations within the Northeastern Vis group.
Co Authorship network from the NU vis lab faculty members
November 21, 2024 at 8:51 PM
johnguerra.bsky.social
I created an interactive co-authorship network #dataviz of @ieeevis.bsky.social researchers

👉🏼 observablehq.com/@john-guerra... 👈🏼

This visualization explores the connections between researchers who have co-authored papers at IEEE VIS 1990-2023

Built with reactivewidgets.org and @observablehq.com
November 21, 2024 at 12:24 AM
johnguerra.bsky.social
What Language/Database/Platform/AI people work with vs want to work with from the StackOverflow Anual survey.

observablehq.com/@john-guerra...

It seems like we should be learning Zig...

A #dataviz makeover of the original chord diagram (second image)
Matrix visualization of what languages people work with vs want to use Original chord diagram by stack overflow
November 19, 2024 at 1:16 AM
johnguerra.bsky.social
Using Reactive Widgets (johnguerra/reactiveWidg...) I can quickly build larger applications, like this #CSCW2024 paper explorer were you can browse the 400+ papers by topics and search for your interests.

👉🏼 johnguerra.co/viz/cscw2024... 👈🏼

3/3
#CSCW2024 paper explorer where you can browse papers by topics and search by sentences. Uses sentence embeddings and dimensionality reduction
November 16, 2024 at 5:04 PM
johnguerra.bsky.social
You can use reactive widgets to speed up your interactive visualization application development, while also facilitating re-usability.

It is also very useful for coordinating views, even if they are written using different libraries. Here's is a simple example synchronizing #vega-lite & #d3js

2/3
Reactive widgets connecting a vega-lite scatterplot and d3 histograms
November 16, 2024 at 5:04 PM
johnguerra.bsky.social
To emphasize that land area is not that important for elections, I created this US election results visualization story johnguerra.co/viz/USElecti... up to 2020 data... Waiting to get access to this year's results
November 12, 2024 at 3:54 PM